File: illegal-proc-macro-derive-use.rs

package info (click to toggle)
rustc 1.89.0%2Bdfsg1-1~bpo13%2B2
  • links: PTS, VCS
  • area: main
  • in suites: trixie-backports
  • size: 906,632 kB
  • sloc: xml: 158,148; python: 34,888; javascript: 19,595; sh: 19,221; ansic: 13,046; cpp: 7,144; asm: 4,376; makefile: 692; lisp: 174; sql: 15
file content (15 lines) | stat: -rw-r--r-- 355 bytes parent folder | download | duplicates (27) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
extern crate proc_macro;

#[proc_macro_derive(Foo)]
//~^ ERROR: only usable with crates of the `proc-macro` crate type
pub fn foo(a: proc_macro::TokenStream) -> proc_macro::TokenStream {
    a
}

// Issue #37590
#[proc_macro_derive(Foo)]
//~^ ERROR: the `#[proc_macro_derive]` attribute may only be used on bare functions
pub struct Foo {
}

fn main() {}